沙城列检位于丰沙、京包两条干线的咽喉,担负着祖国西北物资的运输和晋煤外运任务。丰沙线的特点是坡道长,山洞多,曲线多,所以由沙城开出的上行列车,机车乘务员需要经常制动或连续制动来控制列车速度,保证列车运行安全。因此,对于沙城列检来说,保证列车制动效能和制动配件状态 Shacheng inspection is located in Fengsha, Beijing Bao two trunk throat, bear the northwest of the motherland’s material transport and coal transportation tasks. Fengsha line is characterized by long ramp, cave and more curves, so the up by the Shacheng out of the train, locomotive crew need regular braking or continuous braking to control the speed of the train to ensure the safety of the train. Therefore, for Shacheng inspection, to ensure train braking performance and brake parts status